Sumitomo Mitsui Banking Corporation security incident history
Hacking, data breaches and other security incidents involving Sumitomo Mitsui Banking Corporation, with related coverage.
Incidents: 1 · Most recent
Around 227,000 customer email addresses leaked at Sumitomo Mitsui Banking Corporation
↳ Knock-on damage from the Arara incident · View original incident227kImpact: Around 227,000 customer email addresses
Around 227,000 email addresses belonging to Sumitomo Mitsui Banking Corporation customers were leaked following unauthorised access to arara, its outsourced email delivery provider. No leak of account numbers or passwords has been confirmed.
Related reports: 12 · last report →